VST2 instrument with program list.
when you click in the program name field in the plugin window, a drop down list appears, where you can select a program/preset. The name of the selected program is then shown in the program name field.
when you select a program/preset externally by program change message for example, you see the plugs’ GUI controls like knobs, faders change values according to the choosen program/preset, but the name in the program name field keeps unchanged.
(I do switch programms with my Novation Automap SLMkII in automap mode, maybe it’s related to Automap? Don’t know)